|Category 5 super typhoon (SSHWS)|
|Formed||September 7, 1961|
|Dissipated||September 22, 1961|
|( Extratropical after September 16)|
|Highest winds|| 1-minute sustained:345 km/h (215 mph)|
|Lowest pressure||882 hPa (mbar); 26.05 inHg|
|Damage||$500 million (1961 USD)|
|Areas affected||Guam, Ryūkyū Islands, Japan|
|Part of the 1961 Pacific typhoon season|
Super Typhoon Nancy, also known as the 2nd Muroto Typhoon(第二室戸台風Daini-muroto Taifū), was an extremely powerful tropical cyclone of the 1961 Pacific typhoon season and one of the most intense tropical cyclones on record. The system possibly had the strongest winds ever measured in a tropical cyclone, tied with Hurricane Patricia of 2015. It caused extensive damage and at least 173 deaths and thousands of injuries in Japan and elsewhere in September 1961. Nancy also holds the record for the most consecutive time of a Category 5 tropical cyclone.
The 1961 Pacific typhoon season had no official bounds; it ran year-round in 1961, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
Hurricane Patricia was the second-most intense tropical cyclone on record worldwide, behind Typhoon Tip in 1979, with a minimum atmospheric pressure of 872 mbar. Originating from a sprawling disturbance near the Gulf of Tehuantepec, south of Mexico, in mid-October 2015, Patricia was first classified a tropical depression on October 20. Initial development was slow, with only modest strengthening within the first day of its classification. The system later became a tropical storm and was named Patricia, the twenty-fourth named storm of the annual hurricane season. Exceptionally favorable environmental conditions fueled explosive intensification on October 22. A well-defined eye developed within an intense central dense overcast and Patricia grew from a tropical storm to a Category 5 hurricane in just 24 hours—a near-record pace. On October 23, the hurricane achieved its record peak intensity with maximum sustained winds of 215 mph (345 km/h). This made it the most intense tropical cyclone on record in the Western Hemisphere, and the strongest globally in terms of 1-minute maximum sustained winds.
Japan is an island country in East Asia. Located in the Pacific Ocean, it lies off the eastern coast of the Asian continent and stretches from the Sea of Okhotsk in the north to the East China Sea and the Philippine Sea in the south.
A tropical depression formed from a low near Kwajalein Atoll on September 7. It strengthened rapidly; by the time position fixes could be taken, Nancy was nearly a super typhoon. Moving gradually westward, Nancy explosively deepened and reached wind speeds equivalent to a Category 5 (Saffir–Simpson Hurricane Scale) on September 9. It would maintain that intensity for the next several days.
Kwajalein Atoll is part of the Republic of the Marshall Islands (RMI). The southernmost and largest island in the atoll is named Kwajalein Island, which its majority English-speaking residents often called by the shortened name, Kwaj. The total land area of the atoll amounts to just over 6 square miles (16 km2). It lies in the Ralik Chain, 2,100 nautical miles (3900 km) southwest of Honolulu, Hawaii.
Shortly after reaching peak intensity, Nancy approached the Ryūkyū Islands and began turning. It passed near Okinawa and over Haze. The ridge steering Nancy broke down, and the typhoon turned sharply and headed towards Japan. Nancy made landfall as a strong typhoon on September 16 as it passed directly over Muroto Zaki. Nancy made a second landfall on Honshū near Osaka. The typhoon rapidly traveled up the length of the island as it continued accelerating, eventually reaching a forward speed of 65 mph (100 km/h, 55 knots). The typhoon quickly crossed over Hokkaidō before entering the Sea of Okhotsk as a tropical storm. Nancy went extratropical on September 17. The extratropical system eventually crossed over Kamchatka and entered the open ocean.
The Ryukyu Islands, also known as the Nansei Islands or the Ryukyu Arc, are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ōsumi, Tokara, Amami, Okinawa, and Sakishima Islands, with Yonaguni the westernmost. The larger are mostly high islands and the smaller mostly coral. The largest is Okinawa Island.
Muroto is a city located in Kōchi Prefecture, Japan. The city was founded on March 1, 1951.
Osaka is a designated city in the Kansai region of Japan. It is the capital city of Osaka Prefecture and the largest component of the Keihanshin Metropolitan Area, the second largest metropolitan area in Japan and among the largest in the world with over 19 million inhabitants. Osaka will host Expo 2025. The current mayor of Osaka is Hirofumi Yoshimura.
Although no monetary value of all damage is known, damage was "phenomenal"in all areas where Nancy hit. There were at least 173 deaths and 19 people unaccounted for.
On Guam, over half of all crops were destroyed by heavy winds and rain. A total of $40,000 (1961 USD) worth of damage was done to roads on the island. Most of the damage was on the southern end of the island. No deaths were reported on Guam.
Guam is an unincorporated and organized territory of the United States in Micronesia in the western Pacific Ocean. It is the easternmost point and territory of the United States, along with the Northern Mariana Islands. The capital city of Guam is Hagåtña and the most populous city is Dededo. The inhabitants of Guam are called Guamanians, and they are American citizens by birth. Indigenous Guamanians are the Chamorros, who are related to other Austronesian natives of Eastern Indonesia and Philippines and Taiwan. Guam has been a member of the Pacific Community since 1983.
The United States dollar is the official currency of the United States and its territories per the United States Constitution since 1792. In practice, the dollar is divided into 100 smaller cent (¢) units, but is occasionally divided into 1000 mills (₥) for accounting. The circulating paper money consists of Federal Reserve Notes that are denominated in United States dollars.
In Japan, 172 people were killed, 18 were missing, and 3,184 people were injured. These totals made Nancy the sixth-deadliest typhoon to hit Japan at the time. Timely warnings and adequate preparations were probably responsible for the relatively low death toll. The damage was "small" relative to other typhoons that impacted densely populated areas of Japan.
Hundreds of thousands of people had their lives disrupted. Super typhoon Nancy destroyed 11,539 houses, damaged 32,604 homes, and flooded 280,078 others. Although the exact number may never be known, the Stars and Stripes reported in late September that over 1,056 ships and fishing vessels were sunk or blown ashore and many more were damaged.
Floodwaters washed away 566 bridges and caused 1146 landslides. Roads were destroyed at a total of 2,053 locations. million (1961 USD).Damages in Osaka amounted to $500
On Okinawa, low-lying areas experienced heavy flooding, which did significant damage to agriculture and structures.On Amami-o-Shima, one person was missing and another was badly injured. A ship was sunk. Extensive flooding of crops and houses left 152 people homeless.
Due to Nancy's damage and death toll, the Japan Meteorological Agency named Nancy the "Second Muroto Typhoon". Nancy is one of only eight typhoons to receive special names in Japan.
A reconnaissance aircraft flying into the typhoon near its peak intensity on September 12 determined Nancy's one-minute sustained winds to be 185 knots (215 mph; 345 km/h). If these values are reliable, they would be the highest wind speeds ever measured in a tropical cyclone. However, it was later determined that measurements and estimations of wind speeds from the 1940s to 1960s were excessive. Thus, Nancy's winds may actually be lower than its official best-track value. In 2016, reanalysis of Hurricane Patricia noted that the storm had the same sustained winds as Nancy, the highest on record in the Western Hemisphere.
Although the Saffir–Simpson hurricane wind scale (SSHWS) did not exist at the time, Nancy would have been a Category 5 equivalent for a total of five and a half days (or 132 hours), assuming the wind speed data are reliable. If so, this is the record for the Northern Hemisphere and more than a day longer than the runner-up system, 1962's Typhoon Karen.
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Typhoon Pat, known in the Philippines as Typhoon Luming, was a powerful typhoon that struck Japan during the summer of 1985. Pat is also one of three storms in the Western Pacific which interacted with each other. Originating from a monsoon trough towards the end of August, Pat first formed on August 24 several hundred miles east of the Philippines. It gradually intensified, and two days later, Pat was upgraded into a tropical storm. The cyclone initially moved east-northeast while continuing to deepen. However, Pat leveled off in intensity on August 27. After turning northwest, Pat attained typhoon intensity on August 28. Pat accelerated towards the north, and reached its peak intensity of 80 mph (130 km/h) on August 30. The next day, the storm crossed the southern Japanese islands and entered the Sea of Japan. Gradually weakening, Pat transitioned into an extratropical cyclone later on August 31. Early the next day, the storm moved ashore along northeastern Japan. The system dissipated on September 2 after reentering the Pacific Ocean. A total of 23 perished due to Typhoon Pat and 12 others were rendered as missing. Additionally, 79 people were injured. Furthermore, 38 houses in Japan were demolished, 110 were damaged, and over 2,000 were flooded. More than 160,000 homes lost power. A total of 165 flights were cancelled.
Typhoon Meranti, known in the Philippines as Typhoon Ferdie, was one of the most intense tropical cyclones on record. Impacting the Batanes in the Philippines, Taiwan, as well as Fujian, China in September 2016, Meranti formed as a tropical depression on September 8 near the island of Guam. Tracking to the west northwest, Meranti gradually intensified until September 11, at which point it began a period of rapid intensification. Continuing to rapidly intensify, it became a super typhoon early on September 12, as it passed through the Luzon Strait, ultimately reaching its peak intensity on September 13 with 1-minute sustained winds of 315 km/h (195 mph). Shortly afterwards, it passed directly over the island of Itbayat. Meranti passed to the south of Taiwan as a super typhoon, and began weakening steadily as a result of land interaction. By September 15, it struck China as a Category 2-equivalent typhoon, becoming the strongest typhoon on record to impact Fujian Province. Upon moving inland, rapid weakening ensued and Meranti became extratropical the next day, dissipating shortly afterwards after it passed to the south of the Korean Peninsula.
Typhoon Dinah, known as Typhoon Luding in the Philippines, was the fourth typhoon to form during August 1987. An area of low pressure developed near Guam on August 19, and two days later, the low reached tropical storm intensity as it moved generally west. Intensification was initially gradual, with Dinah becoming a typhoon early on August 24 before it subsequently intensified at a faster pace. Dinah reached its highest strength on August 26 before turning northward on August 28 and into a less favorable conditions aloft, which prompted weakening. Dinah entered the Sea of Japan after passing near Okinawa on August 29, where Dinah leveled off in intensity. The system then began to recurve towards southwestern Japan, and after tracking through the area, Dinah transitioned into an extratropical cyclone on August 31, although the remnants could be traced for four more days as it approached the International Date Line.
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